/*
 * Copyright 2013-2016 consulo.io
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package consulo.backgroundTaskByVfsChange;

import com.intellij.openapi.extensions.ExtensionPointName;
import com.intellij.openapi.fileTypes.FileType;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiManager;
import com.intellij.util.ArrayUtil;
import org.jetbrains.annotations.NotNull;
import consulo.annotations.RequiredReadAction;

/**
 * @author VISTALL
 * @since 1:15/07.10.13
 */
public abstract class BackgroundTaskByVfsChangeProvider {
  public static abstract class ByFileType extends BackgroundTaskByVfsChangeProvider {
    private final FileType myFileType;

    public ByFileType(FileType fileType) {
      myFileType = fileType;
    }

    @Override
    public boolean validate(@NotNull Project project, @NotNull VirtualFile virtualFile) {
      return virtualFile.getFileType() == myFileType;
    }
  }

  public static final ExtensionPointName<BackgroundTaskByVfsChangeProvider> EP_NAME = ExtensionPointName.create("com.intellij.taskByVfsChange");

  public boolean validate(@NotNull Project project, @NotNull VirtualFile virtualFile) {
    return true;
  }

  public abstract void setDefaultParameters(@NotNull Project project, @NotNull VirtualFile virtualFile, @NotNull BackgroundTaskByVfsParameters parameters);

  @NotNull
  public abstract String getTemplateName();

  @NotNull
  @RequiredReadAction
  public String[] getGeneratedFiles(@NotNull Project project, @NotNull VirtualFile virtualFile) {
    PsiManager psiManager = PsiManager.getInstance(project);
    PsiFile file = psiManager.findFile(virtualFile);
    if (file != null) {
      return getGeneratedFiles(file);
    }
    return ArrayUtil.EMPTY_STRING_ARRAY;
  }

  @NotNull
  public String[] getGeneratedFiles(@NotNull PsiFile psiFile) {
    return ArrayUtil.EMPTY_STRING_ARRAY;
  }
}